Rosa, D., 		Cordeiro, F., 		Carvalho, R., 		Souza, E., 		Chevtchenko, S., 		Rodrigues, L., 		Marinho, M., 		Vieira, T., & 		Macario, V.
2023 nov  6.  Recognizing Handwritten Mathematical Expressions of Vertical Addition and Subtraction. Anais da Conference on Graphics, Patterns and Images (SIBGRAPI). [Online] :